Connecting rod



May 29, 1928. 1,671,859 H. N. suuozmcn commc'rine ROD Filed Dec. 25, 1926 2 Shets-Sheet 1 ENTOR Jf. Gunddatk m MM/v6 ATTORNEY- May 29, 1928.

. H. N. GUNDELACH CONNECTING Ron Filed Dec. 23, 1926 2 Sheets-:Sheet 2 INVENTOR f'unddach WITNESSES ATTORNEY Patented May 29, 1928.

HENRY N. GUNDELACH, OF NEW YORK. N. Y.

'CONNECTINGROD.

Application tiled December 28, 1926. Serial No. 156,679.

This invention relates to connecting rods and has for tHtUlJJL'tft to provide an improved construction wherein the usual liner or bibliin; iSPllI-iiilltltCd at both ends ofthc con-' nccting rod.

Another object of the invention is to provide a connecting rod wherein meansare provided at the parts surrounding the crank shaft whereby adjustment may be readily lied to take care of Wear without'the use of shuns bushings or other similar articles.

A still further object. more s 'iecitically. is to provide in a connecting rod an eecentricall v positioned and formed packing: member which acts also as a spacer whereby the parts of the bearing structure are apart and yet sealed against the passage of oil.

in the accompanying drawings Figure 1 is a side view of a connecting: rod disclosing an'embodiment of the intern tion.

Figure 2 is an edge view of the connectins! rod shown in Figtre 1 except the lower part which is shown in section taken on the line 2-2 of Figure 1.

Figure 15 is an enlarged side view of the lower part of the connecting rod shown in Figure 1. certain parts being ln-okcn-awav 'l'or iilustrating certain of the mechanical Features.

l i rure 4 is an end view of the connecting rod shown in Figure l with the adjustabl bearing plate rcimivcd.

Figure is a perspective view of the spacing and packing member shown in Figure 1.

Figure (3 is an elevation of one of the shims shown at the upper part of Figure l.

Rcl'erriiw to the accom )an in" drawin s l" P f I by numerals. 1 indicates a connecting rod as a whole and 23 the top bearing and it the bottom hearing. The bottom bearing 3 is provided with an upper section -1- and a lower section 5. said lower section being removabl and adjustable in respect to the top section 4. The top bcarin; i3 is formed from a single loop (3 which is of metal integral with the body of the connecting rod 1. The looped member U is divided at one point and is adapted to be held together by any desired number of clamping screws 7. A number oi shims h are used to hold the divided part of l oped portion (3 apart when the screw 7 is tightened. When the connecting rod is new. quite a number of the shims 8 are us d and yet the bearing 2 snugly tits" around the piston pin. After the device has been in use for sometime, the parts may become loose and when this is the case screw 7 is loosened or if there is more. thanone screw they are all loosened and one of the shims 8 removed. The screw or screws are then tightened and by this method the bore of bearing 3 is reduced and a snug tit is again secured while maintaining substantially continuously a bearing surface on member A shim may be taken out from time to time as the hearing 2 wears until all of the shims have been removed.

Atthe lower end the bearing 3 (reacts with the crank shaft of the engine and, consequently, the adjustment otl'ered by member 16 and associated parts is larger than that otl'ered at the bearing .2 by the sliims 8. In view of this fact and also in View of the strain on these parts. the members are not sprung. as is the case with the-looped portion 6 but the bearing section 5 is adjusted from time'to time to take care of wear of the various parts. The lincof division between members 4 and 5 is the point where the least strains take place and on one side a dove-tail or rabbetcd structure 9 is provided which permits a limited swinging movement of the member 5 and also provides a substantially oil tight connection when the screws 10 are tightened. ()n theoppositc side the members 4 and 5 are formed with enlargements ill and 12. enlargement 11 being; provided with an arr-shaped groove 13 while enlargement it. is provided with an arc-shaped groove 14 and a substantially V-shaped groove to. A spacin; and packing member 16 is arranged in these grooves for providing packing to prevent oil from passing through the opening 17 and also provide a member for prc sin;r and steadviug the parts. Mem- "her 14' is provided with an arc-shaped section A). a rounded section 20 and a pointed 'section .21. In addition. the member 16 is formed with a notch 22 for accommodating the larg clamping screw 23 which acts to draw the extensions 11 and 12 toward each other. Member It is also provided with enlargemcnts or abutments 2% and 25. said abutments being adapted to be engaged by the respective screws 26 and 27. H

In operation. when it is desiredto adjust member Frso as to provide a smaller opening for hearing 3 and thereby more snugly fit the crank shaft. screw 10 is loosened slight-- ly and screw 23 is also loosened somewhat. Screws 26 and 27 are then loosened to an appreciable extent after which screws and 23 are tightened until bearing 3 has a goodv snug fit with its crank shaft. In order to provide a limited looseness to permit easy turning vof the parts without .wabbling,

screws 26 and 27 are then tightened and as these screws are tightenedthey will press against the section 21and rotate member 16 in such a direction as to-cause members 11 and 12 to s read somewhat. Ifthe screw 23 is too tiglt to, permit any spreading, this screw may 'be loosened slightly and then screws 26 and 27 operated on. These two screws and screw 23 are adjusted back and forth as the case may be until section 5 is caused to pro erl'y fit against the crank shaft and in sucii a position that'any wear will have been taken up. After the adjustment has been rovided, the engine or other device to which the-connecting rod is connected may be used until an appreciable looseness takes place a second time. A second adjustmentmay be made and in fact,

a large numberofadjustments maybe made from time to time to take care of the wear of the parts. 'However,- when the adjustment has beenmadeuntil member 1 6 is infsuch a position that the extensions 11 and 12 are brought into contact, any further adjustment is prevented. The use of member 16 in addition to acting asa bracing member and expander actsas a packing for preventing oil from passing out throw h openin" 17.

What I claim is z" D b 1. In a bearing formed in two parts'and means presenting an articulated connection for said arts at one point, a screw at a diametrical y opposite point connecting said parts together and drawing the parts toward each other, a packing member rotatable in a plane at right angles to the'axis of said bearing, said packing member being arranged. ad-

jacent said screw, and screw means acting on the packing member for partly rotating the same for spreading said parts as far as said screw will permit. 7

2. In a bearing structure formed in two parts, means for connecting said structure together and packing means interposed between said parts for holding said parts sep arated to a greater or 1cm extent, said means including a metallic rotatable member formed on one half as a rounded section and on the other half as an arc-shaped section and a pair ofabutments, and set screws acting on the abutments for turning the pack-.

ing means so as to force said arts away from each other as far as permitted.

HE Y N. GU'NDELACH.

3. In a bearing structure formed in two 

